package com.bluefoxyu.handler;

import com.bluefoxyu.domain.result.Result;
import com.bluefoxyu.exception.BaseException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;

/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 捕获业务异常
     * @param ex ex
     * @return Result.error(ex.getMessage())
     */
    @ExceptionHandler
    public Result<String> exceptionHandler(BaseException ex){
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }

    /**
     * 处理SQL异常，比如用户名，id冲突等
     * @param ex ex
     * @return Result.error(msg)
     */
    @ExceptionHandler
    public Result<String> exceptionHandler(SQLIntegrityConstraintViolationException ex) {
        String message = ex.getMessage();
        if (message.contains("Duplicate entry")) {
            String[] split = message.split(" ");
            String username=split[2];
            String msg=username+ "已存在";
            return Result.error(msg);
        } else {
            return Result.error("未知错误");
        }
    }

}
